265 lines
7.4 KiB
Plaintext
265 lines
7.4 KiB
Plaintext
/*
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* $Id$
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*/
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/*
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* Harbour Project source code:
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* Dynamic Object management and misc. Object related functions
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*
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* Copyright 1999 Eddie Runia <eddie@runia.com>
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* www - http://www.harbour-project.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version, with one exception:
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*
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* The exception is that if you link the Harbour Runtime Library (HRL)
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* and/or the Harbour Virtual Machine (HVM) with other files to produce
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* an executable, this does not by itself cause the resulting executable
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* to be covered by the GNU General Public License. Your use of that
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* executable is in no way restricted on account of linking the HRL
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* and/or HVM code into it.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA (or visit
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* their web site at http://www.gnu.org/).
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*
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*/
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/*
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* The following parts are Copyright of the individual authors.
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* www - http://www.harbour-project.org
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*
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* Copyright 1999 Antonio Linares <alinares@fivetech.com>
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* __objGetMsgList
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*
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* Copyright 2000 Jf. Lefebvre <jfl@mafact.com> and Ra. Cuylen <rac@mafact.com>
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* __objDerivedFrom
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*
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* New Param for Method :ClassSel() to allow it to return only ClassData array
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*
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* See doc/license.txt for licensing terms.
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*
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*/
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#include "common.ch"
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#include "error.ch"
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#include "hboo.ch"
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FUNCTION __objHasData( oObject, cSymbol )
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IF !ISOBJECT( oObject ) .OR. !ISCHARACTER( cSymbol )
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__errRT_BASE( EG_ARG, 3101, NIL, ProcName( 0 ) )
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ENDIF
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RETURN __objHasMsg( oObject, cSymbol ) .AND. ;
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__objHasMsg( oObject, "_" + cSymbol )
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FUNCTION __objHasMethod( oObject, cSymbol )
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IF !ISOBJECT( oObject ) .OR. !ISCHARACTER( cSymbol )
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__errRT_BASE( EG_ARG, 3101, NIL, ProcName( 0 ) )
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ENDIF
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RETURN __objHasMsg( oObject, cSymbol ) .AND. ;
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!__objHasMsg( oObject, "_" + cSymbol )
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// nCLassType can be 0, 1 or 2 see hbOO.ch
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//#define HB_MSGLISTALL 0
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//#define HB_MSGLISTCLASS 1
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//#define HB_MSGLISTPURE 2
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FUNCTION __objGetMsgList( oObject, lDataMethod, nClassType )
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LOCAL aInfo
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LOCAL aData
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LOCAL n
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LOCAL nLen
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IF !ISOBJECT( oObject )
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__errRT_BASE( EG_ARG, 3101, NIL, ProcName( 0 ) )
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ENDIF
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IF !ISLOGICAL( lDataMethod )
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lDataMethod := .T.
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ENDIF
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IF !ISNUMBER( nClassType )
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nClasstype := HB_MSGLISTALL
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ENDIF
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aInfo := ASort( oObject:ClassSel(nClassType) )
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aData := {}
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n := 1
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nLen := Len( aInfo )
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DO WHILE n <= nLen .AND. !( Substr( aInfo[ n ], 1, 1 ) == "_" )
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/* If in range and no set function found yet ( set functions */
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/* begin with a leading underscore ). */
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// If found -> DATA
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// else METHOD
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/* Find position of matching set function in array with all symbols */
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IF ( AScan( aInfo, {| tmp | tmp == ( "_" + aInfo[ n ] ) }, n + 1 ) != 0 ) == lDataMethod
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AAdd( aData, aInfo[ n ] )
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ENDIF
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n++
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ENDDO
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RETURN aData
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FUNCTION __objGetMethodList( oObject )
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IF !ISOBJECT( oObject )
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__errRT_BASE( EG_ARG, 3101, NIL, ProcName( 0 ) )
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ENDIF
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RETURN __objGetMsgList( oObject, .F. )
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FUNCTION __objGetValueList( oObject, aExcept )
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LOCAL aDataSymbol
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LOCAL nLen
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LOCAL aData
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LOCAL cSymbol
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LOCAL n
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IF !ISOBJECT( oObject )
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__errRT_BASE( EG_ARG, 3101, NIL, ProcName( 0 ) )
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ENDIF
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IF !ISARRAY( aExcept )
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aExcept := {}
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ENDIF
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aDataSymbol := __objGetMsgList( oObject )
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nLen := Len( aDataSymbol )
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aData := {}
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FOR n := 1 to nLen
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cSymbol := aDataSymbol[ n ]
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IF AScan( aExcept, {| tmp | tmp == cSymbol } ) == 0
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AAdd( aData, { cSymbol, __objSendMsg( oObject, cSymbol ) } )
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ENDIF
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NEXT
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RETURN aData
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FUNCTION __ObjSetValueList( oObject, aData )
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IF !ISOBJECT( oObject )
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__errRT_BASE( EG_ARG, 3101, NIL, ProcName( 0 ) )
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ELSE
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AEval( aData, {| aItem | __objSendMsg( oObject, "_" + aItem[ HB_OO_DATA_SYMBOL ], aItem[ HB_OO_DATA_VALUE ] ) } )
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ENDIF
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RETURN oObject
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FUNCTION __objAddMethod( oObject, cSymbol, nFuncPtr )
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IF !ISOBJECT( oObject ) .OR. !ISCHARACTER( cSymbol ) .OR. !ISNUMBER( nFuncPtr )
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__errRT_BASE( EG_ARG, 3101, NIL, ProcName( 0 ) )
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ELSEIF !__objHasMsg( oObject, cSymbol )
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__clsAddMsg( oObject:ClassH, cSymbol, nFuncPtr, HB_OO_MSG_METHOD, NIL, 1 )
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ENDIF
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RETURN oObject
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FUNCTION __objAddInline( oObject, cSymbol, bInline )
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IF !ISOBJECT( oObject ) .OR. !ISCHARACTER( cSymbol )
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__errRT_BASE( EG_ARG, 3101, NIL, ProcName( 0 ) )
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ELSEIF !__objHasMsg( oObject, cSymbol )
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__clsAddMsg( oObject:ClassH, cSymbol, bInline, HB_OO_MSG_INLINE, NIL, 1 )
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ENDIF
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RETURN oObject
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FUNCTION __objAddData( oObject, cSymbol )
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LOCAL nSeq, hClass
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IF !ISOBJECT( oObject ) .OR. !ISCHARACTER( cSymbol )
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__errRT_BASE( EG_ARG, 3101, NIL, ProcName( 0 ) )
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ELSEIF !__objHasMsg( oObject, cSymbol ) .AND. !__objHasMsg( oObject, "_" + cSymbol )
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hClass := oObject:ClassH
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nSeq := __cls_IncData( hClass ) // Allocate new Seq#
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__clsAddMsg( hClass, cSymbol, nSeq, HB_OO_MSG_DATA, NIL, 1 )
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__clsAddMsg( hClass, "_" + cSymbol, nSeq, HB_OO_MSG_DATA, NIL, 1 )
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ENDIF
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RETURN oObject
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FUNCTION __objModMethod( oObject, cSymbol, nFuncPtr )
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IF !ISOBJECT( oObject ) .OR. !ISCHARACTER( cSymbol ) .OR. !ISNUMBER( nFuncPtr )
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__errRT_BASE( EG_ARG, 3101, NIL, ProcName( 0 ) )
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ELSEIF __objHasMethod( oObject, cSymbol )
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__clsModMsg( oObject:ClassH, cSymbol, nFuncPtr )
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ENDIF
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RETURN oObject
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FUNCTION __objModInline( oObject, cSymbol, bInline )
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IF !ISOBJECT( oObject ) .OR. !ISCHARACTER( cSymbol ) .OR. !ISBLOCK( bInline )
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__errRT_BASE( EG_ARG, 3101, NIL, ProcName( 0 ) )
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ELSEIF __objHasMethod( oObject, cSymbol )
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__clsModMsg( oObject:ClassH, cSymbol, bInline )
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ENDIF
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RETURN oObject
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FUNCTION __objDelMethod( oObject, cSymbol )
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IF !ISOBJECT( oObject ) .OR. !ISCHARACTER( cSymbol )
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__errRT_BASE( EG_ARG, 3101, NIL, ProcName( 0 ) )
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ELSEIF __objHasMethod( oObject, cSymbol )
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__clsDelMsg( oObject:ClassH, cSymbol )
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ENDIF
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RETURN oObject
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FUNCTION __objDelInline( oObject, cSymbol )
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RETURN __objDelMethod( oObject, cSymbol ) // Same story
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FUNCTION __objDelData( oObject, cSymbol )
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IF !ISOBJECT( oObject ) .OR. !ISCHARACTER( cSymbol )
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__errRT_BASE( EG_ARG, 3101, NIL, ProcName( 0 ) )
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ELSEIF __objHasData( oObject, cSymbol )
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__clsDelMsg( oObject:ClassH, cSymbol )
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__clsDelMsg( oObject:ClassH, "_" + cSymbol )
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__cls_DecData( oObject:ClassH ) // Decrease wData
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ENDIF
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RETURN oObject
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FUNCTION __objDerivedFrom( oObject, xSuper )
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LOCAL cClassName
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IF !ISOBJECT( oObject )
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__errRT_BASE( EG_ARG, 3101, NIL, ProcName( 0 ) )
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ENDIF
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IF ISOBJECT( xSuper )
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cClassName := xSuper:ClassName()
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ELSEIF ISCHARACTER( xSuper )
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cClassName := Upper( xSuper )
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ELSE
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__errRT_BASE( EG_ARG, 3101, NIL, ProcName( 0 ) )
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ENDIF
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RETURN __clsParent( oObject:ClassH, cClassName )
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